src.conf(5) seems to affect ports build

[Ruslan Ermilov]

On Sun, Oct 22, 2006 at 05:34:36PM +0200, Jeremie Le Hen wrote:
> Ruslan,
> 
> On Sat, Oct 21, 2006 at 09:25:33PM +0400, Ruslan Ermilov wrote:
> > > Also, your patch avoids performing the WITH(OUT)_* stuff for ports in
> > > order to prevent from polluting the namespace.  If there is to be
> > > some WITH(OUT)_* knobs which leads to CFLAGS modification in the future
> > > (I'm thinking about ProPolice with the upcoming GCC 4.1), wouldn't it
> > > be worth benefiting this framework for ports ?
> >
> > It avoids only /etc/src.conf stuff when running bsd.port.mk; if you put
> > WITH(OUT)_* in /etc/make.conf it will still be picked up.
> 
> Yes indeed, but MK_FOO won't be set and this would require to either
> duplicate the code that modifies CFLAGS, or at least test for MK_FOO
> or WITH_FOO at the same time.
> 
> Let me show you an example.
> 
> I have an additional <bsd.ssp.mk> that is included from both bsd.sys.mk
> and bsd.port.mk:
> 
> % .if ${MK_SSP} != "no"
> % SSP_CFLAGS      ?=      -fstack-protector
> % CFLAGS          +=      ${SSP_CFLAGS}
> % . if defined(WARNS) && ${WARNS} >= 7 && !empty(SSP_CFLAGS)
> % CWARNFLAGS      +=      -Wstack-protector
> % . endif
> % .endif
> 
> Currently it is thus quite useful to use MK_SSP when this file is
> included from bsd.ports.mk.  With your whole patch I would have to
> either duplicate these bits in bsd.ports.mk or turn the condition to
> something like:
> 
> % .if (defined(MK_SSP) && ${MK_SSP} != "no") || defined(WITH_SSP)
> 
> What do you advice me to do ?
> 
I still don't understand why my patch created a problem for you.
This option is not in bsd.own.mk, so it's not covered by my patch.
All my patch does is "don't process /etc/src.conf" which is entirely
for src/.

So, you can continue to use your bsd.ssp.mk as before, and my patch
shouldn't influence it.

If you want to really mimic the standard behavior, then bsd.ssp.mk
should check the (WITH|WITHOUT)_SSP set by a user, and set MK_SSP
to "yes/no", accordingly; setting MK_SSP by a user shouldn't be
allowed or supported.  You then set WITH_SSP= in /etc/make.conf
(or in /etc/src.conf if you want it only for src/), or pass
-DWITH_SSP on the make command line, and you're done.

P.S.  There has been a patch floating around that adds support for
/etc/ports.conf.  That would allow for clear separation:

	src.conf	src/ only settings;
	ports.conf	ports/ only settings;
	make.conf	all-time settings, including when building
			src/ and ports/.


Cheers,
-- 
Ruslan Ermilov
ru at FreeBSD.org
FreeBSD committer
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